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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Cronograph's ??
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<blockquote data-quote="kcebcj" data-source="post: 780275" data-attributes="member: 10391"><p><u><strong>Original Poster</strong></u></p><p></p><p></p><p> For alignment I do almost exactly what Engineering 101 states above. I have a permanent shooting bench with a mount for the chrono that is 20 feet exactly in front of the bench set in concrete. On the stand pipe for the chrono I installed a adjustment mechanism so I can adjust up and down and side to side. I have two center marks on the plastic inserts and after the rifle is set in the bags on the bench and on target I simply look back at the rifle through the inserts and align the chrono dead nuts with the muzzle so the bullet passes through the center of the chrono perfectly. I used a laser boresite when building the mount to get it located properly but now only sight back to align.</p><p> </p><p> The chrono is a CED M 2. I don't know how accurate it is but sense setting everything up I have taken the velocity numbers ran them in Exbal and put the bullet on the paper at my 800 yard target many many times. Once that is done I know the velocity is somewhat close then I can fool with the BC and velocity to prove the load.</p><p> </p><p> So yeah I think a chrono is a good investment and set up properly it will do as designed. Exact velocities I doubt it but gets you in the ball game and speeds up the process.</p></blockquote><p></p>
[QUOTE="kcebcj, post: 780275, member: 10391"] [U][B]Original Poster[/B][/U] For alignment I do almost exactly what Engineering 101 states above. I have a permanent shooting bench with a mount for the chrono that is 20 feet exactly in front of the bench set in concrete. On the stand pipe for the chrono I installed a adjustment mechanism so I can adjust up and down and side to side. I have two center marks on the plastic inserts and after the rifle is set in the bags on the bench and on target I simply look back at the rifle through the inserts and align the chrono dead nuts with the muzzle so the bullet passes through the center of the chrono perfectly. I used a laser boresite when building the mount to get it located properly but now only sight back to align. The chrono is a CED M 2. I don't know how accurate it is but sense setting everything up I have taken the velocity numbers ran them in Exbal and put the bullet on the paper at my 800 yard target many many times. Once that is done I know the velocity is somewhat close then I can fool with the BC and velocity to prove the load. So yeah I think a chrono is a good investment and set up properly it will do as designed. Exact velocities I doubt it but gets you in the ball game and speeds up the process. [/QUOTE]
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Cronograph's ??
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